Finding the Fourth Proportional to 51,499.56, 76,863.22 and 48,136.56

Step by Step Solution

1. Step 1: Write the proportion equation
   51,499.56 : 76,863.22 = 48,136.56 : x
2. Step 2: Convert to fraction form
   51,499.56/76,863.22 = 48,136.56/x
3. Step 3: Cross multiply
   51,499.56x = 76,863.22 × 48,136.56
4. Step 4: Simplify right side
   51,499.56x = 3,699,931,001.32
5. Step 5: Solve for x
   x = 3,699,931,001.32/51,499.56
6. Step 6: Final answer
   x = 71,843.93